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4 years ago

Please help . . . Thank you!

Mathematics

2 answers:

Anettt [7]4 years ago

8 0

Answer:

i think this is the answer aha

to get from 5 to 55 you times by 11

so i think to get from 11.8 to x you do the same thing and multiply by 11.

11.8×11=129.8

so x= 129.8

i think aha

Ann [662]4 years ago

8 0

Answer:

x = 129.8

Step-by-step explanation:

5 * 11 = 55

11.8 * 11 = 129.8

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Answer:

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Step-by-step explanation:

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3 years ago

Solve the system of equations by substitution. 3/8 x + 1/3 y =17/24 and x + 7y = 8

goblinko [34]

$\left \{ {{ \frac{3}{8}x+ \frac{1}{3}y = \frac{17}{14} } \atop {x+7y=8}} \right.$

To solve this system by substitution, first isolate x in the second equation.

$x+7y=8$
$x+7y-7y=8-7y$
$x=8-7y$

Now, plug this expression ( $8-7y$ ) for x in the top equation to solve for y.

$\frac{3}{8} (8-7y)+ \frac{1}{3} y= \frac{17}{14}$
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$72-63y+8y=17$
$72-55y=17$
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$y=1$

Now that you have y, plug it into the second equation and solve for x.

$x+7y=8$
$x+7(1)=8$
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Last step is to plug your x- and y-values in to both equations to check your work.

$\frac{3}{8} (1)+ \frac{1}{3} y= \frac{17}{24}$

$\frac{3}{8} * \frac{3}{3} = \frac{9}{24} ; \frac{1}{3} * \frac{8}{8} = \frac{8}{24}$

$\frac{9}{24} + \frac{8}{24} = \frac{17}{24}$ <--True

$1+7(1)=8$
$1+7=8$ <--True

Answer:
$x=1 \\ y=1$

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Answer:

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Step-by-step explanation:

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2 years ago

What is the domain of the square root function graphed below

Lina20 [59]

Answer:

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